Home / 90,315.87-135,480.02-27,133.35

Finding the Fourth Proportional to 90,315.87, 135,480.02 and 27,133.35

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Solution

The fourth proportional to 90,315.87, 135,480.02 and 27,133.35 is: 40,701.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,315.87 : 135,480.02 = 27,133.35 : x
  2. Step 2: Convert to fraction form
    90,315.87/135,480.02 = 27,133.35/x
  3. Step 3: Cross multiply
    90,315.87x = 135,480.02 × 27,133.35
  4. Step 4: Simplify right side
    90,315.87x = 3,676,026,665.00
  5. Step 5: Solve for x
    x = 3,676,026,665.00/90,315.87
  6. Step 6: Final answer
    x = 40,701.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.